Hysteretic Adsorption and Desorption of Hydrogen by Nanoporous Metal-Organic Frameworks | Zendy

Xuebo Zhao | Zendy; Bo Xiao | Zendy; Ashleigh J. Fletcher | Zendy; K. Mark Thomas | Zendy; Darren Bradshaw | Zendy; Matthew J. Rosseinsky | Zendy

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Hysteretic Adsorption and Desorption of Hydrogen by Nanoporous Metal-Organic Frameworks

Author(s) -

Xuebo Zhao,

Bo Xiao,

Ashleigh J. Fletcher,

K. Mark Thomas,

Darren Bradshaw,

Matthew J. Rosseinsky

Publication year - 2004

Publication title -

science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 12.556

H-Index - 1186

eISSN - 1095-9203

pISSN - 0036-8075

DOI - 10.1126/science.1101982

Subject(s) - nanoporous , adsorption , desorption , supercritical fluid , hysteresis , hydrogen , metal organic framework , materials science , chemical engineering , kinetics , metal , nanotechnology , chemistry , organic chemistry , metallurgy , physics , quantum mechanics , engineering

Adsorption and desorption of hydrogen from nanoporous materials, such as activated carbon, is usually fully reversible. We have prepared nanoporous metal-organic framework materials with flexible linkers in which the pore openings, as characterized in the static structures, appear to be too small to allow H2 to pass. We observe hysteresis in their adsorption and desorption kinetics above the supercritical temperature of H2 that reflects the dynamical opening of the "windows" between pores. This behavior would allow H2 to be adsorbed at high pressures but stored at lower pressures.

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